The steam jet or air jet vacuum pump is well known.
On the exit side of the mass balance there should a lot of
applications for low pressure air at a high volumetric flow rate by
coming off a high pressure supply line with a jet ejector.
The overall efficiency should be quite high.
This is something that could have been common over a hundred years ago
and may be dirt cheap off the shelf today.
I just haven't heard of it.
- posted 11 years ago